Floor-hinge.



O. KATZENBERGER. FLOOR HINGE.

APPLICATION IILED NOV. 8, 19,10.

996,41 3! Patented June l.27, 1911.

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o. KATZBNBEYRGBR. FLOOR HINGE.

u APPLICATION FILED NOV. 8, 1910. A996,41 3.

WITNESSES OSCAR KATZENERGER, 0F CHICAGO, ILLINOIS.

FLOOR-HINGE.

To all 'whom it may concern.

Be it known that I, OSCAR KATZENBERGER, a citizen of the United States,and a resident of Chicago, in the county of Cook and State of Illinois,have invented a new and Improved Floor-Hinge, of which the following isa full, clear, and exact description.

The invention is an improved hinge, belonging to that class of springhinges employed to hinge a door or other closure to the floor. Hinges ofthis type ordinarily have torsional springs which are necessarily sosmall in diameter that they will not stand for any considerable lengthof time the strains to which they are subjected. To overcome this in myimproved hinge, -I have provided a vertically-movable bolt actuated bythe hinge cam and forced to the cam to return the closure to closedposition by a resilient compression member or spring, in this mannerproducing a strong, simple and compact hinge structure.

Reference is to be had to the accompanying drawings forming a part ofthis speciiication, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a view illustrating my improved floor hinge as applied to adoor; Fig. 2 is a sectional view of the hinge, with the door fullyopened, and at right-angles to the position shown in Fig. 1; Fig. 3 is afragmentary sectional view of the hinge on an enlarged scale, the partsbeing in the position shown in Fig. 2; Fig. 4 is a detail view of theadjusting nut for the spring; Fig. 5 is a fragmentary sectional view ofthe cross-head at the lower end of the bolt; Fig. 6 is a fragmentaryside view of the modified form of construction, showing the lowerportion of the hinge frame and floor plate partly in vertical section;Fig. 7 is a plan of the floor plate shown in Fig. G, with the adjustablecam-carrying member attached; Fig. 8 is a plan of the modified form offloor plate; Fig. 9 is an inverted plan of the cam-carrying teeth; Fig.10 is an edge view of thesame; and Fig. 11 is a fragmentary section onthe line 11*11 of Fi 9.

lgeferring to Figs. 1 to 5 inclusive, the construction of my improvedhinge requires a suitable vertically-disposed frame, the frame shownhaving side bars l0, the inner side bar turned outwardly at the top andsecured to the outer side bar, and the outer side bar Specification ofLetters Patent.

Application filed November 8, 1910.

Patented June 27, 1911. Serial No. 591,306.

of L-form to extend along the inner and lower edges of the door asubstantial distance beyond the inner side bar, where it is providedwith suitable screw openings for securing the hinge to the door, thehinge frame being let into the door, as is the usual practice, so thatthe outer side bar 10 will be flush with the edge of the door. A U-shaped bar 11, constituting a part of the frame, is secured between theside bars 10, and is substantially shorter than the rectangular portionof the hinge frame formed by the side bars 10, and is substantiallysymmetrically disposed so as to leave a space at each end. A floor plate12 is provided with a vertical pintle or stud 13, at the base of which,adjoining the plate, is a wearplate or collar 14. The pintle 13 isjournaled in the lower horizontal arm of the side bar 10, and at theinner side thereof is provided with an operating cam 15, the upper camedge of which inclines downwardly to each side of diametrically oppositepoints, the lowest points of the cam being arranged in a diametricalvertical plane at rightangles to a line extending between the highestpoints of the cam. The lowest, as well as the highest, points of the camare provided with V-shaped notches 16, with the notches at the highestpoints disposed at the opposite sides of the floor plate 12, and of thelower points arranged in a line extending lengthwise of this plate. Inthe arms or cross members of the U-shaped frame member 11 is verticallyslidable a bolt 17, the bolt being screw-threaded adjacent to its lowerend, where it is provided above the lower arm of the frame member 11,with an adjusting nut 18. The portion of the bolt extending below theframe member 11 is provided with a cross-head or pin 19, each arm ofwhich is provided with a roller 2O arranged to respectively bear atopposite sides of the center on the cam 15, the ends of the pin or headpassing through vertical guide slots 21, formed in the side bars 10 ofthe frame. The bolt is normally forced downwardly to press the rollers20 against the cam, by suitable resilient means, such as a compressionspring 22, surrounding the bolt and bearing on the upper arm of theframe member and the nut 18.

Vith the hinge thus constructed, when applied to the door, the bolt androllers 20 will be at their lowest position when the door is closed, asshown in Fig. 1, the door being retained in this position until movedunder substantial pressure by the engagement of the rollers 20 in thelowest` notches 16 of the cam. When the door is swung open against theaction of the compression spring to stand in a fully opened position atright-angles to the position shown in Fig. 1, the rollers 20 engage inthe notches 16 at the highest point of the cam and retain the door untilthe latcentral portion of the door jamb when the door is in closedposition, without depending on the screws in the ioor plate for theproper adjustment. In arriving at this, and also lessening t-he frictionbetween the Hoor plate and hinge frame in so far as possible, I providea floor plate 122L having the usual screw openings for fastening it inplace, and also provided with a large opening at the point where the camstem or stud is to be applied, this opening having at each side aroughened portion or teeth 26. A cam-carrying member, as shown in detailin Figs. 9 and 10, is constructed with a boss 27 at the lower side, of asize to exactly fit within the opening 25, and havingoppositely-arranged teeth or roughened portions 28 adapted to mesh orengage with the teeth 26. The camcarrying member further comprises anintermediate adjusting plate 29 and a bearing plate 30, the adjustingplate being secured to the floor plate by machine screws 31, which. passthrough slots 32 formed in the adjusting plate 29 and threaded into thefloor plate, the slots 32, when the screws are slightly loosened, givingthe cam-carrying member a limited turning adjustment. The boss 27,adjusting plate 29 and bearing plate 30 may be made of a single piece,but, as shown in Fig, 6, are made of separate plates lriveted together.The cam-carrying member is provided with a central angular openingthrough which passes the angular portion of the stem or stud 13a of thecam 15, the stem or stud being of suficient length above the bearingplate to pass through a double thickness of the hinge frame carried bythe door, the lower plate of this frame being cut out to form a bearingrecess to receive the bearing rollers or balls 33, which are interposedbetween a bearing plate 34 at the bottom of the recess and the upperbearing face of the bearing plate 30. The stem or stud 13a is riveted orotherwise secured to the cam-carrying member. By this construction ofthe floor plate it is apparent that the cam can be adjusted to cause thedoor to stop, when closed, at the required point without molesting thescrews in the floor plate, the camcarrying member when secured in placebeing prevented from moving relatively to the floor plate by reason ofthe teeth or roughened surfaces.

I-Iaving thus described my invention, I claim as new and desire tosecure by Letters Patent:

1. A hinge having a floor plate provided with a vertical pintle, a framejournaled on the pintle, a cam arranged centrally over the pintle,having an upper cam edge inclining downwardly to each side atdiametrically opposite points, a vertically movable bolt havinghorizontally disposed members bearing on the cam respectively at eachside of the center, and a resilient compression member forcing the boltto the cam.

2. In a hinge, a vertical p-intle having a cam provided with an up-percam edge inclining downwardly to each side of diametrically oppositepoints, with the highest and lowest points of the cam provided withnotches, a vertically movable bolt having a cross-head seating on thecam and adapted to pass into the notches, and a spring forcing the boltin a direction to press the cross-head to the cam.

3. In a hinge, a pintle, a hinge frame journaled on the pintle, a camfixed relatively to the pintle and arranged within the frame, the camhaving an upper cam edge inclining downwardly to each side ofdiametrically opposite points, a bolt vertically movable in the frame,having a cross member at its lower end provided with rollers seating onthe opposite sides of the cam, and a compression spring forcing the boltin a direction to press the rollers to the cam.

4:. In a hinge, a pintle, a hinge frame journaled on the pintle, thepintle having a cam fixed relatively thereto, a vertically movable bolthaving a cross-head arranged to bear on the cam at each side of acentral position, with the ends of the cross-head guided vertically inthe hinge frame, and a compression spring forcing the bolt in adirection to press the cross-head to the cam.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OSCAR KATZENl-SIERGJR.Y

Witnesses:

OLGA LUND, ALBERT J. HEoKEL.

Copies of this patentmay be obtained for ive cents each, by addressingthe Commissioner of Patents, Washington, D. C.

